Pau Espin
441768a823
Until now, if timeslot resources where being allocated for an MS for which its msclass is not known, msclass=12 was being selected. While it's true that msclass=12 is quite a usual one implemented by phones (Rx=4, Rx=4, Sum=5), some MS implementations may not support such modes. As a result, if the PCU allocates a TBF for an MS which its msclass is not known (eg. because it used 1-phase access aka no Pkt Res Req), then a minimal msclass=1 must be assumed. Otherwise, it may assign more multislots than the MS can handle, and will work incorrectly since an amount of RLC/MAC blocks won't be sent/received properly. Test output changes in MslotTest.ok are expected since some allocations are accumulative, and ms_class=0 is called the first one. TbfTest.err changes happen in test_ms_merge_dl_tbf_different_trx(). Change-Id: If80fdd793db7dad029faa83dbf980ffc4959e2e5 |
||
|---|---|---|
| contrib | ||
| debian | ||
| doc | ||
| include | ||
| src | ||
| tests | ||
| .gitignore | ||
| .gitreview | ||
| COPYING | ||
| Makefile.am | ||
| README.md | ||
| TODO | ||
| TODO-RELEASE | ||
| configure.ac | ||
| git-version-gen | ||
| osmoappdesc.py | ||
README.md
osmo-pcu - Osmocom Packet Control Unit
This repository contains a C/C++-language implementation of a GPRS Packet Control Unit, as specified by ETSI/3GPP. It is part of the Osmocom Open Source Mobile Communications project.
The Packet Control Unit is terminating the Layer 2 (RLC/MAC) of the GPRS radio interface and adapting it to the Gb Interface (BSSGP+NS Protocol) towards the SGSN.
The PCU interfaces with the physical layer of the radio interface. OsmoPCU is typically used co-located with the BTS, specifically OsmoBTS. For legacy BTSs that run proprietary sotware without an interface to OsmoPCU, you may also co-locate it with the BSC, specifically OsmoBSC
Homepage
The official homepage of the project is https://osmocom.org/projects/osmopcu/wiki/OsmoPCU
GIT Repository
You can clone from the official osmo-pcu.git repository using
git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-pcu
There is a web interface at https://gitea.osmocom.org/cellular-infrastructure/osmo-pcu
Documentation
We provide a user manual as well as a vty reference manual
Please note that a lot of the PCU configuration actually happens inside the BSC, which passes this configuration via A-bis OML to the BTS, which then in turn passes it via the PCU socket into OsmoPCU.
Mailing List
Discussions related to osmo-pcu are happening on the osmocom-net-gprs@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/osmocom-net-gprs for subscription options and the list archive.
Please observe the Osmocom Mailing List Rules when posting.
Contributing
Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards
We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details
The current patch queue for osmo-pcu can be seen at https://gerrit.osmocom.org/#/q/project:osmo-pcu+status:open
Current limitations
- No PFC support
- No fixed allocation support (was removed from 3GPP Rel >= 5 anyway)
- No extended dynamic allocation support
- No unacknowledged mode operation
- Only single slot assignment on uplink direction
- No half-duplex class support (only semi-duplex)
- No TA loop
- No power loop
- Multi-BTS support not tested